ELECTRIC MACHINE APPARATUS

The present disclosure relates to a rotor () for an electric machine (). The rotor () includes a plurality of magnet poles (--) each comprising one or more permanent magnets (-). The magnet poles (--) are angularly separated from each other and an inter-pole region (--) is formed between adjacent magnet poles (--). At least one external flux barrier (--) is disposed in each said inter-pole region (a-f; a-h), the at least one external flux barrier (--) comprising an external aperture. The present disclosure also relates to an electric machine () including a rotor (); and to a vehicle () including an electric machine ().